Is rectal bleeding a couple of day before a period normal? it's happened 2 times in the last 2 months now, bright red blood and only once before...

See a doctor: Kyrea - i'd suggest speaking with your gynecologist or a colorectal doc. If it is cyclical, and from your rectum, as you desribe - i'd be suspicious of endometriosis. The most likely location, given your history - and if indeed even is this - is in the rectosigmoid junction. However, first and foremost you should see a doc for further discussion of your history and then decision on work up.